Boost going bananas

[Dante]

Hia! :D

Got a strange boost problem. When i floor the pedal on 3,4 or 5th gear and just when the second Turbo comes online i first get the regular boost drop and just before it reaches max load (0,8bar) the boost jumps up and down between 0,6-0,8 for a short while (2-3 seconds) and after that it stays still at 0,8 untill redline. Any ideas? :S

My plugs are BCP7ES gapped to 0,9mm (new from couple days ago). Car is a Jap-spec, dynoes to 315Hk and boost is about 0,8.

[Dante]

Nobdoy got a clue or tip for me? :D

[edge]

I had a similar problem. Check all the little black rubber hoses above the heatsheild and down at the front just behind the fan

[edge]

they looked ok until i took them off, Some had spilts at the ends and some had holes that had become wider.

[G-NEMIE]

Yeah, and we're not going to fall for a banana in the tailpipe [Beverly Hills Cop (1984)]

[JohnA]

...the regular boost drop and just before it reaches max load (0,8bar) the boost jumps up and down between 0,6-0,8 for a short while (2-3 seconds) and after that it stays still at 0,8 untill redline. ...
What exactly is the regular boost drop?
On a stock setup there is no such thing.

As said, I'd first try replacing the vacuum hoses all around the actuators and VSVs.

[Dante]

What exactly is the regular boost drop?
On a stock setup there is no such thing.

As said, I'd first try replacing the vacuum hoses all around the actuators and VSVs.

Uhm well not boost drop, i meant the tiiiiny delay before the 2nd Turbo kicks in bascially. :) And Edge, they look okay but i'll take them off and have a closer look then, thnx for the tip.